CN107388223A - A kind of boiler blowdown water comprehensive utilization device and its application method - Google Patents
A kind of boiler blowdown water comprehensive utilization device and its application method Download PDFInfo
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- CN107388223A CN107388223A CN201710754111.5A CN201710754111A CN107388223A CN 107388223 A CN107388223 A CN 107388223A CN 201710754111 A CN201710754111 A CN 201710754111A CN 107388223 A CN107388223 A CN 107388223A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 322
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 92
- 238000011084 recovery Methods 0.000 claims abstract description 19
- 239000003546 flue gas Substances 0.000 claims abstract description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000005516 engineering process Methods 0.000 claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 7
- 239000011593 sulfur Substances 0.000 claims abstract description 7
- 238000013459 approach Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 41
- 238000001816 cooling Methods 0.000 claims description 40
- 230000008569 process Effects 0.000 claims description 28
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 5
- 239000002918 waste heat Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 239000004071 soot Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 8
- 241001365789 Oenanthe crocata Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/54—De-sludging or blow-down devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
The present invention relates to a kind of boiler blowdown water comprehensive utilization device and its application method, including the high-temperature water interface being connected respectively with the blowdown water out of boiler circulating water system and hydrophobic outlet, and the water at low temperature interface being connected with high-temperature water interface, the recovery water system being connected with water at low temperature interface；It is described recovery water system be used as sulfur removal technology water either shower water or rinse water or low-temperature flue gas removing flue gas in SO3Neutralize water；Formed with nine circulation ducts between high-temperature water interface and water at low temperature interface；The sewer of boiler circulating water system and it is hydrophobic after the high-temperature water interface after nine circulation duct any bars of approach again through water at low temperature interface enter recovery water system；It has structure design advantages of simple, stable and reliable for performance, and effectively boiler blowdown water can be recycled, while can also effectively protect nature, energy-conserving and environment-protective, also has the advantages that automaticity height and wide adaptability.
Description
Technical field
The present invention relates to boiler blow-off water-treatment technology field, more particularly to a kind of boiler blowdown water comprehensive utilization device and
Its application method.
Background technology
At present, there is continuous blowdown water and periodical blowdown water in power station dum boiler in operation, wherein, continuous blowdown water enters
Steam-water separation is carried out after entering continuous blowdown flash tank dilatation, most of power plant are to the steam separated directly using to idle discharge
Put, and small part power plant is then delivered to oxygen-eliminating device to the steam separated.After the water separated enters row's flash vessel surely, greatly
Most power plant are as direct discharging of waste water.Boiler blowdown water before flash vessel is discharged into general temperature all 250 DEG C -350 DEG C it
Between, sewage temperature is at 100 DEG C or so after flash vessel dilatation, and pH value is between 9-10, alkaline discharge water of the category with certain heat.
For alkaline discharge water of the part with certain heat there has been no preferable treating method, generally more method is simply to locate
It is outer after reason to arrange.However, using this processing mode, the waste of the energy is on the one hand caused, on the other hand also pollutes environment.Pin
To current boiler running process blowdown and the hydrophobic actual conditions not utilized, the present invention proposes that boiler blowdown water and hydrophobic waste heat are comprehensive
Close the device utilized and its application method.
The content of the invention
For insufficient present in boiler blowdown water in the prior art and hydrophobic Heat Treatment technology, the purpose of the present invention exists
In：A kind of boiler blowdown water comprehensive utilization device and its application method are provided, it has structure design advantages of simple, stable performance
Reliably, effectively boiler blowdown water can be recycled, while can also effectively protected nature, energy-conserving and environment-protective, also had
There are automaticity height and wide adaptability.
In order to achieve the above object, the present invention adopts the following technical scheme that realization：
One kind is used for boiler blowdown water comprehensive utilization device, and the device includes the sewer with boiler circulating water system respectively
The high-temperature water interface being connected with hydrophobic outlet, and the water at low temperature interface being connected with high-temperature water interface are exported, is connect with water at low temperature
The recovery water system that mouth is connected；The recovery water system is used as sulfur removal technology water either shower water or rinse water or low temperature
SO in flue gas removing flue gas3Neutralize water；
Formed with nine circulation ducts between high-temperature water interface and water at low temperature interface；The sewer of boiler circulating water system
Enter recovery water system through water at low temperature interface again after nine circulation duct any bars of approach after the high-temperature water interface with hydrophobic
System；
Wherein, nine circulation ducts are as follows：
First circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter drop
Water at low temperature interface is flowed directly to after in warm Intermediate Heat Exchanger；
Article 2 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface, which enter, to be changed
Water at low temperature interface is flowed directly to after in hot equipment；
Article 3 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface, which enter, to be expanded
Water at low temperature interface is flowed directly to after in container；
Article 4 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter drop
After being exchanged heat in warm Intermediate Heat Exchanger, the temperature lowering water of formation flow to flash vessel through high-temperature water interface again, is expanded in flash vessel
Reduction warm water interface is flow to after holding cooling；
Article 5 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface, which enter, to be changed
After being exchanged heat in hot equipment, the temperature lowering water of formation flow to flash vessel, and reduction warm water is flow to after flash vessel carries out dilatation cooling
Interface；
Article 6 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter drop
After being exchanged heat in warm Intermediate Heat Exchanger, the temperature lowering water of formation flow to heat transmission equipment through high-temperature water interface again, enters in heat transmission equipment
Being flow to after row heat exchange reduces warm water interface；
Article 7 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter drop
After being exchanged heat in warm Intermediate Heat Exchanger, the temperature lowering water of formation flow to heat transmission equipment through high-temperature water interface again, enters in heat transmission equipment
It is flow to after row heat exchange after flash vessel carries out dilatation cooling and flow to reduction warm water interface again；
Article 8 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface, which enter, to be expanded
Container carries out dilatation and cooled into after water at low temperature interface, flow to heat transmission equipment and is exchanged heat, after heat transmission equipment is exchanged heat
Temperature lowering water flow to water at low temperature interface again；
Article 9 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface, which enter, to be changed
It is flow to after being exchanged heat in hot equipment in cooling Intermediate Heat Exchanger, the temperature lowering water after cooling Intermediate Heat Exchanger processing is again through high-temperature water
Interface flow to after flash vessel carries out dilatation cooling and flow to water at low temperature interface.
As the further optimization of such scheme, the sewer includes continuous blowdown water or periodical blowdown water；It is described
It is hydrophobic including steam soot blowing is hydrophobic, reheater is hydrophobic, superheater is hydrophobic, instrument is hydrophobic, water-cooling wall is hydrophobic, main feedwater pipe of boiler
It is hydrophobic, economizer is hydrophobic or desuperheating water is hydrophobic.
As the further optimization of such scheme, the heat transmission equipment includes steam air heater, heating hydrophone or low temperature cigarette
Treatment apparatus.
As the further optimization of such scheme, the device also includes control system, and the control system includes programmable control
Device processed, the blowdown water flow sensor being connected with programmable controller data-signal, hydrophobic flow sensor, the first TEMP
Device, second temperature sensor, three-temperature sensor, the blowdown water flow sensor and hydrophobic flow sensor are respectively placed in
On the sewer and drain water piping delivery port of boiler circulating water system；First temperature sensor, second temperature sensor, the 3rd temperature
Degree sensor is respectively placed in cooling Intermediate Heat Exchanger, flash vessel, on heat transmission equipment, for detecting cooling Intermediate Heat Exchanger, dilatation
Temperature when device, heat transmission equipment water outlet, and the temperature conditions detected is sent into controller；
The device also include be used for adjust blowdown water-carrying capacity blowdown Water flow adjusting valve, for adjust hydrophobic flow dredge
Water flow adjusting valve, the cooling Intermediate Heat Exchanger flow control valve for adjusting the water inlet of cooling Intermediate Heat Exchanger and water outlet, it is used for
The flash vessel flow control valve of the water inlet of regulation flash vessel and water outlet, the heat transmission equipment stream for adjusting heat transmission equipment water inlet and water outlet
Adjustable valve；
In the cooling that controller is detected according to the first temperature sensor, second temperature sensor, three-temperature sensor
Between heat exchanger, flash vessel, heat transmission equipment water outlet when temperature signal control of sewage disposal Water flow adjusting valve, hydrophobic flow control valve,
Cool Intermediate Heat Exchanger flow control valve, flash vessel flow control valve, the corresponding inflow of heat transmission equipment Flow-rate adjustment valve regulation and
Water yield.
As the further optimization of such scheme, described control system also includes being arranged in boiler circulating water system
For detecting the 4th temperature sensor of blowdown coolant-temperature gage and the 5th temperature sensor for detecting drain temperature, the described 4th
Temperature sensor and the 5th temperature sensor are connected respectively at controller.
As the further optimization of such scheme, the control system also includes being manually entered runner pipe for field operation work
The selector of road type, the selector are connected with controller；The controller is by wireless network or cable network and far
Range monitoring center to center communications connects, for by blowdown coolant-temperature gage, drain temperature and warm Intermediate Heat Exchanger, dilatation in the boiler detected
Temperature when device, heat transmission equipment water outlet is sent to remote monitoring center, while the circulation duct type that field operation work is selected
Send to remote monitoring center.
As the further optimization of such scheme, the selector is the button selector with LCD screen or touches
Screen formula selector.
As the further optimization of such scheme, the control system also includes being used to detect recovery water system neutral and alkali water
PH detectors, the pH detectors are connected with controller data signal.
As the further optimization of such scheme, the control system also includes the display screen being connected with controller, should
When display screen is for showing blowdown coolant-temperature gage in boiler, drain temperature and warm Intermediate Heat Exchanger, flash vessel, heat transmission equipment water outlet
Temperature value, recycle-water pH value.
The application method of the above-mentioned boiler blowdown water comprehensive utilization device of the present invention comprises the following steps：
1) according to sewer in boiler circulating water system and hydrophobic actual temp situation, changing for nine circulation paths is determined
Thermal efficiency highest circulation path is as optimal circulation path；
2) open the flow control valve on optimal circulation path so that the sewer of boiler circulating water system and it is hydrophobic successively
Recovery water system is flow to by high-temperature water interface, optimal circulation path, water at low temperature interface；By sewer on optimal circulation path
Exchanged heat accordingly with hydrophobic, to make full use of sewer and hydrophobic waste heat；The alkaline water obtained in water system will be reclaimed
As sulfur removal technology water either shower water or rinse water or low-temperature flue gas removing flue gas in SO3Neutralize water.
Had the advantages that using boiler blowdown water comprehensive utilization device of the present invention and its application method：
(1) present invention can combine according to sewer with drain temperature and barometric gradient design, be closed according to physical condition
Manage optimum organization.
(2) of the invention boiler blowdown water comprehensive utilization device structure and clear principle, simple to operate, the reasonable row of make use of
Sewage and hydrophobic waste heat, it is not necessary to consume other thermals source and water source, power consumption is few, and occupation of land is small, and operating cost is low, solves current boiler
Unit sewer and hydrophobic utilization rate are low, while solve preheater low-temperature corrosion and block up the serious problems of ash, cooperation-removal flue gas
In SO3。
(3) using the above-mentioned a set of control system of the present invention, operative employee's task efficiency can be effectively improved, reduces worker
Labor intensity, substantially increase the automaticity of single unit system, the flow signal of whole device can not only be obtained in real time
And temperature signal, additionally it is possible to facilitate execute-in-place worker to be selected according to the sewer of boiler water cycle system and hydrophobic temperature conditions
Suitable circulation path is selected, selectivity and operability are higher.
Brief description of the drawings
Accompanying drawing 1 is the fundamental diagram of boiler blowdown water comprehensive utilization device of the present invention.
Embodiment
1 pair of boiler blowdown water comprehensive utilization device and its application method of the present invention are described in detail below in conjunction with the accompanying drawings.
One kind is used for boiler blowdown water comprehensive utilization device, and the device includes the sewer with boiler circulating water system respectively
The high-temperature water interface being connected with hydrophobic outlet, and the water at low temperature interface being connected with high-temperature water interface are exported, is connect with water at low temperature
The recovery water system that mouth is connected；The recovery water system is used as sulfur removal technology water either shower water or rinse water or low temperature
SO in flue gas removing flue gas3Neutralize water；
Formed with nine circulation ducts between high-temperature water interface and water at low temperature interface；The sewer of boiler circulating water system
Enter recovery water system through water at low temperature interface again after nine circulation duct any bars of approach after the high-temperature water interface with hydrophobic
System；
Wherein, nine circulation ducts are as follows：
First circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter drop
Water at low temperature interface is flowed directly to after in warm Intermediate Heat Exchanger；
Article 2 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface, which enter, to be changed
Water at low temperature interface is flowed directly to after in hot equipment；
Article 3 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface, which enter, to be expanded
Water at low temperature interface is flowed directly to after in container；
Article 4 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter drop
After being exchanged heat in warm Intermediate Heat Exchanger, the temperature lowering water of formation flow to flash vessel through high-temperature water interface again, is expanded in flash vessel
Reduction warm water interface is flow to after holding cooling；
Article 5 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface, which enter, to be changed
After being exchanged heat in hot equipment, the temperature lowering water of formation flow to flash vessel, and reduction warm water is flow to after flash vessel carries out dilatation cooling
Interface；
Article 6 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter drop
After being exchanged heat in warm Intermediate Heat Exchanger, the temperature lowering water of formation flow to heat transmission equipment through high-temperature water interface again, enters in heat transmission equipment
Being flow to after row heat exchange reduces warm water interface；
Article 7 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter drop
After being exchanged heat in warm Intermediate Heat Exchanger, the temperature lowering water of formation flow to heat transmission equipment through high-temperature water interface again, enters in heat transmission equipment
It is flow to after row heat exchange after flash vessel carries out dilatation cooling and flow to reduction warm water interface again；
Article 8 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface, which enter, to be expanded
Container carries out dilatation and cooled into after water at low temperature interface, flow to heat transmission equipment and is exchanged heat, after heat transmission equipment is exchanged heat
Temperature lowering water flow to water at low temperature interface again；
Article 9 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface, which enter, to be changed
It is flow to after being exchanged heat in hot equipment in cooling Intermediate Heat Exchanger, the temperature lowering water after cooling Intermediate Heat Exchanger processing is again through high-temperature water
Interface flow to after flash vessel carries out dilatation cooling and flow to water at low temperature interface.
The sewer includes continuous blowdown water or periodical blowdown water；It is described hydrophobic including steam soot blowing is hydrophobic, reheating
Device is hydrophobic, superheater is hydrophobic, instrument is hydrophobic, water-cooling wall is hydrophobic, the hydrophobic of main feedwater pipe of boiler, economizer are hydrophobic or desuperheat
Water is hydrophobic.
The heat transmission equipment includes steam air heater, heating hydrophone or low low-temperature flue gas processor.
The device also includes control system, and the control system includes programmable controller, believes with programmable controller data
Number connection blowdown water flow sensor, hydrophobic flow sensor, the first temperature sensor, second temperature sensor, the 3rd temperature
Spend sensor, the blowdown water flow sensor and hydrophobic flow sensor be respectively placed in boiler circulating water system sewer and
On drain water piping delivery port；First temperature sensor, second temperature sensor, three-temperature sensor are respectively placed among cooling
Heat exchanger, flash vessel, on heat transmission equipment, for detecting temperature when cooling Intermediate Heat Exchanger, flash vessel, heat transmission equipment water outlet,
And the temperature conditions detected is sent into controller；The device also includes being used for the blowdown water-carrying capacity for adjusting blowdown water-carrying capacity
Regulating valve, the hydrophobic flow control valve for adjusting hydrophobic flow, the drop for adjusting the water inlet of cooling Intermediate Heat Exchanger and water outlet
Heat exchanger flow regulating valve between middle benefit gas, the flash vessel flow control valve for adjusting flash vessel water inlet and water outlet, change for adjusting
The heat transmission equipment flow control valve of hot equipment water inlet and water outlet；Controller according to the first temperature sensor, second temperature sensor,
Three-temperature sensor detect cooling Intermediate Heat Exchanger, flash vessel, heat transmission equipment water outlet when temperature signal control of sewage disposal
Water flow adjusting valve, hydrophobic flow control valve, cooling Intermediate Heat Exchanger flow control valve, flash vessel flow control valve, heat exchange are set
For the corresponding inflow of Flow-rate adjustment valve regulation and water yield.
Described control system also include be arranged in boiler circulating water system be used for detect the 4th of blowdown coolant-temperature gage
Temperature sensor and the 5th temperature sensor for detecting drain temperature, the 4th temperature sensor and the 5th TEMP
Device is connected respectively at controller.
The control system also includes the selector that circulation duct type is manually entered for field operation work, the selector
It is connected with controller；The controller is communicated to connect by wireless network or cable network with remote monitoring center, for inciting somebody to action
Temperature hair in the boiler detected when blowdown coolant-temperature gage, drain temperature and warm Intermediate Heat Exchanger, flash vessel, heat transmission equipment water outlet
Remote monitoring center is delivered to, while the circulation duct type that field operation work selects is sent to remote monitoring center.
The selector is button selector or touch screen type selector with LCD screen.
The control system also include be used for detect recovery water system neutral and alkali water pH detectors, the pH detectors with
Controller data signal connects.
The control system also includes the display screen being connected with controller, and the display screen is used to show sewer in boiler
Temperature value, recycle-water pH value when temperature, drain temperature and warm Intermediate Heat Exchanger, flash vessel, heat transmission equipment water outlet.
The application method of the above-mentioned boiler blowdown water comprehensive utilization device of the present invention comprises the following steps：
1) according to sewer in boiler circulating water system and hydrophobic actual temp situation, changing for nine circulation paths is determined
Thermal efficiency highest circulation path is as optimal circulation path；
2) open the flow control valve on optimal circulation path so that the sewer of boiler circulating water system and it is hydrophobic successively
Recovery water system is flow to by high-temperature water interface, optimal circulation path, water at low temperature interface；By sewer on optimal circulation path
Exchanged heat accordingly with hydrophobic, to make full use of sewer and hydrophobic waste heat；The alkaline water obtained in water system will be reclaimed
As sulfur removal technology water either shower water or rinse water or low-temperature flue gas removing flue gas in SO3Neutralize water.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using this hair
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to implementation here
Example, for those skilled in the art according to the announcement of the present invention, not departing from improvement that scope made and modification all should be
Within protection scope of the present invention.
Claims (10)
1. one kind is used for boiler blowdown water comprehensive utilization device, it is characterised in that：The device include respectively with boiler circulating water
The blowdown water out of system and the hydrophobic high-temperature water interface for exporting and being connected, and the water at low temperature interface being connected with high-temperature water interface,
The recovery water system being connected with water at low temperature interface；The recovery water system is used as either shower water or the cleaning of sulfur removal technology water
Water or low-temperature flue gas remove in the SO3 in flue gas and water；
Formed with nine circulation ducts between high-temperature water interface and water at low temperature interface；The sewer of boiler circulating water system and dredge
Water enters recovery water system through water at low temperature interface again after the high-temperature water interface after nine circulation duct any bars of approach；
Wherein, nine circulation ducts are as follows：
First circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter in cooling
Between in heat exchanger after be flowed directly to water at low temperature interface；
Article 2 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface are set into heat exchange
Water at low temperature interface is flowed directly to after in standby；
Article 3 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter flash vessel
In after be flowed directly to water at low temperature interface；
Article 4 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter in cooling
Between exchanged heat in heat exchanger after, the temperature lowering water of formation flow to flash vessel through high-temperature water interface again, and dilatation drop is carried out in flash vessel
Being flow to after temperature reduces warm water interface；
Article 5 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface are set into heat exchange
After being exchanged heat in standby, the temperature lowering water of formation flow to flash vessel, and being flow to after flash vessel carries out dilatation cooling reduces warm water interface；
Article 6 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter in cooling
Between exchanged heat in heat exchanger after, the temperature lowering water of formation flow to heat transmission equipment through high-temperature water interface again, is changed in heat transmission equipment
Being flow to after heat reduces warm water interface；
Article 7 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter in cooling
Between exchanged heat in heat exchanger after, the temperature lowering water of formation flow to heat transmission equipment through high-temperature water interface again, is changed in heat transmission equipment
It is flow to after heat after flash vessel carries out dilatation cooling and flow to reduction warm water interface again；
Article 8 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface enter flash vessel
Carry out dilatation to cool into after water at low temperature interface, flow to heat transmission equipment and exchanged heat, the drop after heat transmission equipment is exchanged heat
Warm water flow to water at low temperature interface again；
Article 9 circulation duct is：The sewer of boiler circulating water system and the hydrophobic process high-temperature water interface are set into heat exchange
It is flow to after standby middle heat exchange in cooling Intermediate Heat Exchanger, the temperature lowering water after cooling Intermediate Heat Exchanger processing is again through high-temperature water interface
It flow to after flash vessel carries out dilatation cooling and flow to water at low temperature interface.
2. one kind according to claim 1 is used for boiler blowdown water comprehensive utilization device, it is characterised in that：The sewer
Including continuous blowdown water or periodical blowdown water；It is described it is hydrophobic including steam soot blowing is hydrophobic, reheater is hydrophobic, superheater is hydrophobic,
Instrument is hydrophobic, water-cooling wall is hydrophobic, the hydrophobic of main feedwater pipe of boiler, economizer is hydrophobic or desuperheating water is hydrophobic.
3. one kind according to claim 1 is used for boiler blowdown water comprehensive utilization device, it is characterised in that：The heat exchange is set
It is standby to include steam air heater, heating hydrophone or low low-temperature flue gas processor.
4. one kind according to claim 1 is used for boiler blowdown water comprehensive utilization device, it is characterised in that：The device also wraps
Control system is included, the control system includes programmable controller, the blowdown water-carrying capacity being connected with programmable controller data-signal
Sensor, hydrophobic flow sensor, the first temperature sensor, second temperature sensor, three-temperature sensor, the sewer
Flow sensor and hydrophobic flow sensor are respectively placed on the sewer and drain water piping delivery port of boiler circulating water system；The
One temperature sensor, second temperature sensor, three-temperature sensor are respectively placed in cooling Intermediate Heat Exchanger, flash vessel, heat exchange
In equipment, for detecting temperature when cooling Intermediate Heat Exchanger, flash vessel, heat transmission equipment water outlet, and the temperature feelings that will be detected
Condition is sent into controller；
The device also includes being used to adjust the blowdown Water flow adjusting valve of blowdown water-carrying capacity, the hydrophobic stream for adjusting hydrophobic flow
Adjustable valve, for adjust cooling Intermediate Heat Exchanger water inlet and water outlet cooling Intermediate Heat Exchanger flow control valve, for adjusting
Flash vessel is intake and the flash vessel flow control valve of water outlet, the heat transmission equipment flow tune for adjusting heat transmission equipment water inlet and water outlet
Save valve；
Changed among the cooling that controller detects according to the first temperature sensor, second temperature sensor, three-temperature sensor
Temperature signal control of sewage disposal Water flow adjusting valve when hot device, flash vessel, heat transmission equipment water outlet, hydrophobic flow control valve, cooling
Intermediate Heat Exchanger flow control valve, flash vessel flow control valve, the corresponding inflow of heat transmission equipment Flow-rate adjustment valve regulation and water outlet
Amount.
5. one kind according to claim 4 is used for boiler blowdown water comprehensive utilization device, it is characterised in that：Described control
System also include be arranged in boiler circulating water system be used for detect the 4th temperature sensor of blowdown coolant-temperature gage and for examining
The 5th temperature sensor of drain temperature is surveyed, the 4th temperature sensor and the 5th temperature sensor are connected respectively at controller
Connect.
6. one kind according to claim 5 is used for boiler blowdown water comprehensive utilization device, it is characterised in that：The control system
System also includes the selector that circulation duct type is manually entered for field operation work, and the selector is connected with controller；Institute
State controller to communicate to connect by wireless network or cable network and remote monitoring center, for by blowdown in the boiler detected
Temperature when coolant-temperature gage, drain temperature and warm Intermediate Heat Exchanger, flash vessel, heat transmission equipment water outlet is sent to remote monitoring center,
The circulation duct type that field operation work selects is sent to remote monitoring center simultaneously.
7. one kind according to claim 6 is used for boiler blowdown water comprehensive utilization device, it is characterised in that：The selector
For button selector or touch screen type selector with LCD screen.
8. one kind according to claim 7 is used for boiler blowdown water comprehensive utilization device, it is characterised in that：The control system
System also includes being used for the pH detectors for detecting recovery water system neutral and alkali water, and the pH detectors connect with controller data signal
Connect.
9. one kind according to claim 8 is used for boiler blowdown water comprehensive utilization device, it is characterised in that：The control system
System also includes the display screen being connected with controller, and the display screen is used to show blowdown coolant-temperature gage, drain temperature and temperature in boiler
Temperature value, recycle-water pH value when Intermediate Heat Exchanger, flash vessel, heat transmission equipment water outlet.
A kind of a kind of 10. use for boiler blowdown water comprehensive utilization device according to any one of claim 1-9
Method, it is characterised in that the application method comprises the following steps：
1) according to sewer in boiler circulating water system and hydrophobic actual temp situation, determine that the heat exchange of nine circulation paths is imitated
Rate highest circulation path is as optimal circulation path；
2) flow control valve on optimal circulation path is opened so that the sewer of boiler circulating water system and hydrophobic pass through successively
High-temperature water interface, optimal circulation path, water at low temperature interface flow to recovery water system；On optimal circulation path by sewer and dredge
Water is exchanged heat accordingly, to make full use of sewer and hydrophobic waste heat；The alkaline water obtained in recovery water system is used as
Sulfur removal technology water either shower water or rinse water or low-temperature flue gas removing flue gas in SO3Neutralize water.
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| CN201710754111.5A CN107388223A (en) | 2017-08-29 | 2017-08-29 | A kind of boiler blowdown water comprehensive utilization device and its application method |
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| CN201710754111.5A CN107388223A (en) | 2017-08-29 | 2017-08-29 | A kind of boiler blowdown water comprehensive utilization device and its application method |
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| CN107388223A true CN107388223A (en) | 2017-11-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110579129A (en) * | 2019-08-07 | 2019-12-17 | 国祯美洁(安徽)生物质热电有限公司 | Biomass boiler waste heat utilization equipment |
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